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Home >> Cadillac >> 1990 >> Seville Base, 440T4/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM Trouble Code Charts >> ECM Code EO20: Open Fuel Pump Circuit >> Failure Conditions:

Failure Conditions:

Fuel pump feedback voltage less than or equal to 2 volts for one second or more.

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